On Wed, Feb 16, 2011 at 08:38:54PM +0100, Jeremy Jongepier wrote: > On 02/16/2011 08:27 PM, S. Massy wrote: > >Hello, all, > > > >So, thanks to the excellent advice received on this list, I recently > >purchased a Roland UA25EX and it works just great, and out of the box at > >that. > > > >Also thanks to this list, I now have my RT kernel sorted out, lean and > >mean as ever. All great! > > > >With my (crappy) internal sound interface, I used to be able to leave > >jack running for days at "-p128" without any problem, at least with my > >new kernel. With my new USB soundcard, however, jack works flawlessly > >for a few hours and then abruptly exits saying something to the effect > >that jack timed out and the watchdog is doing its painful duty. > > > >Here is my jack command-line: > >$ jackd -P61 -t100 -d alsa -d hw:2,0 -p128 -r 44100 > > > >I tried adding "-v" for good measure and redirecting to a file, here's > >what it looks like before the downfall: > >-Couple 100K of boredom- [...] > >load = 0.2478 max usecs: 4.000, spare = 1447.000 > >load = 0.2273 max usecs: 3.000, spare = 1448.000 > >load = 0.2859 max usecs: 5.000, spare = 1446.000 > >(and then tonnes of) > >**** alsa_pcm: xrun of at least 0.029 msecs > >**** alsa_pcm: xrun of at least 0.025 msecs > >**** alsa_pcm: xrun of at least 0.026 msecs > >**** alsa_pcm: xrun of at least 0.024 msecs > >---and so forth until jackd gets killed. > > > >Does anyone know what the problem could be? Is something wrong with my > >jackd command-line? Is there anything further I can do to debug? > > > >Cheers, > >S.M. > > > > Hello, what distro are you using? And did you also check your system > logs to see if anything happened around that time? And try using -n Debian squeeze/custom RT kernel. And no, logs/dmesg didn't reveal anything. > 3, I think JACK uses 2 by default for the ALSA backend and the man > page recommends a setting of 3 for USB cards. Ahh, that's what happens when you don't do your homework. I left jack to run all night with "-n3" and "-p64" and so far, nothing, save a few xruns of 0.0x ms. Thanks, S.M. > > Best, > > Jeremy > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user > -- _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
